Flame holder
A flame holder is a bluff body mounted in high-velocity combustible flow to create a local region of turbulence and low velocity in which a flame is stabilized.[1]
Jet engine afterburners and ramjets require a flame holder.[2]
The simplest design, often used in amateur projects, is the can-type flame holder, which consists of a can covered in small holes. Much more effective is the H-gutter flame holder, which is shaped like a letter H with a curve facing and opposing the flow of air. Even more effective, however, is the V-gutter flame holder, which is shaped like a V with the point in the direction facing the flow of air. Some studies have suggested that adding a small amount of base bleed to a V-gutter helps reduce drag without reducing effectiveness.[3] The most effective of the flame holders are the step type flame holder and the strut type flame holder.
The first mathematical model of a flame holder was proposed in 1953.[4]
See also
[edit]- Index of aviation articles
- AVPIN - A monofuel used to power turbojet starter motors.
- Components of jet engines
- Exhaust mixer
References
[edit]- ^ The Cambridge Aerospace Dictionary,Bill Gunston 2004, Editor, Jane’s Information Group,ISBN 978-0-511-33833-5
- ^ Ingenito, Antonella (2021). "Flameholder Design Guidelines". Subsonic Combustion Ramjet Design. SpringerBriefs in Applied Sciences and Technology. pp. 47–74. doi:10.1007/978-3-030-66881-5_6. ISBN 978-3-030-66880-8.
- ^ "Wayback Machine" (PDF). www.ijser.org. Archived (PDF) from the original on 2021-05-01. Retrieved 2025-09-09.
- ^ Matkowsky, B. J.; Olagunju, D. O. (1981). "Pulsations in a Burner-Stabilized Premixed Plane Flame". SIAM Journal on Applied Mathematics. 40 (3): 551–562. doi:10.1137/0140046. JSTOR 2101350. See p. 552.
External links
[edit]
 | This article about aircraft engines is a stub. You can help Wikipedia by expanding it. |